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Posted By: Duwop Pinion seal - Wed Jul 21 2021 10:15 PM
Looking for info about changing the pinion seal 57 1 ton 3 spd heavy duty. Can I remove just the 5 bolts in part# 4 and parts 1,2,3 come off together or do need to remove parts# 1,2,3 and then 4 to get to the seal in part #4 See pic from manual

Attached picture 0C2B66A6-B4C8-49A3-81DF-720539FD2CB8.jpeg
Posted By: Johnny N Re: Pinion seal - Wed Jul 21 2021 11:12 PM
You must remove the nut then washer then yoke. Then you can take off the 5 bolts and get to your seal. John
Posted By: Duwop Re: Pinion seal - Wed Jul 21 2021 11:23 PM
Thanks John, yeah I went back looking at manual and finally figured it out. Is there an easy way or special socket to use to get that big not off.
Posted By: Johnny N Re: Pinion seal - Wed Jul 21 2021 11:31 PM
I believe its a 1-5/8 socket and you can use a pipe wrench on yoke wedge on ground to hold it. Its going to take a lot of grunt to break the nut loose. Possibly need a long persuader on ratchet
Posted By: Johnny N Re: Pinion seal - Wed Jul 21 2021 11:34 PM
I have gotten them off with an air impact
Posted By: moparguy Re: Pinion seal - Thu Jul 22 2021 12:06 AM
You "may" need to take the socket to a grinder and thin the walls a bit to get it to fit. Then with the full weight of the truck on the rear tires, use a 3/4" breaker and 3' cheater pipe. Or a Good impact. If working on a lift I use a crude wrench I made years ago to slip over the yoke that locks up on the frame or spring. Good info here.

Good Luck,

RonR
Posted By: klhansen Re: Pinion seal - Thu Jul 22 2021 12:12 AM
You'd have to block the tires somehow unless you use a wrench that holds the yoke. If the yoke is free to turn, the truck will just move. It could even roll over chocks if you're reefing on the wrench hard enough. A piece of bar stock with a couple holes drilled to match bolts going into the yoke where the u-joints connect should do the trick. I have one that has a hole in the center for the socket and 4 holes to bolt to the yoke.
Posted By: Duwop Re: Pinion seal - Thu Jul 22 2021 12:22 AM
All of these suggestions so great, so thanks to all. I’ll give it a go tomorrow and see if it work out.
Posted By: EdPruss Re: Pinion seal - Thu Jul 22 2021 02:20 AM
I have a 4’ pipe wrench I use for that, works great.

Ed
Posted By: Duwop Re: Pinion seal - Fri Jul 30 2021 01:55 AM
Job is done per your recommendations, but only after I hired a mechanic to do the job. He used RTV sealant between #4 part and diff carrier which leaked and he need to two pinion seals because he refused to remove the entire original seal before trying to cram the new seal in place. So I paid him 193 bucks and still had to take it apart this afternoon and fix it myself. I was going to let him fix it when he gets back from vacation as he left town the next morning after getting my cash.But once bitten twice shy and the more I thought about the more I remembered if you want a job done we’ll do it yourself. 309 bucks and three hour of my labor and I did it it’s completed and not leaking and I got a new socket tool set from HF yea me!
Why is good help so hard to find?
Posted By: BC59 Re: Pinion seal - Fri Jul 30 2021 04:10 PM
Originally Posted by Duwop
only after I hired a mechanic to do the job.

Most misused job title around!
Posted By: Wrenchbender Ret. Re: Pinion seal - Fri Jul 30 2021 09:31 PM
You have to have a license to be a fix peoples hair but anyone can hang out a shingle & put brakes on a car.
George
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